Annihilation of Positrons in Metals

Sedov, V.L.

doi:10.1070/pu1968v011n02abeh003804

Cited by 6 publications

(3 citation statements)

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“…Thus bound states exist for µ < µ c or, in terms of imaginary Debye radius, for |r D | > a B /3. The Sedov method [34,35] does not work in the present case, thus an exact or, at least, a precise (if finite) value of the critical parameter η c is an open question.…”

Section: Discussionmentioning

confidence: 92%

“…Let us consider the ground s-state by putting n = 1. It follows from the equations ( 10)-( 12 An analytical method was developed by Sedov [34] for determining the critical screening parameter for the Yukawa potential v(ρ) = −exp(−ηρ)/ρ. It was then applied to the related exponential cosine screened Coulomb (ECSC) potential [35].…”

Section: The Variational Solutionmentioning

confidence: 99%

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Bound states in the tachyon exchange potential

Zahladko¹,

Duviryak²

2019

Preprint

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Section: Discussionmentioning

confidence: 92%

Section: The Variational Solutionmentioning

confidence: 99%

Bound states in the tachyon exchange potential

Zahladko¹,

Duviryak²

2019

Preprint

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“…AFM ordering in

γ

‐Fe–Mn was established in 1956. Sedov () showed that in the composition range of 13–44 at% Mn, the susceptibility is temperature independent above the Néel temperature, implying that localized moments are absent in the PM state. In their seminal work, Ishikawa and co‐workers established a magnetic phase diagram of

γ

‐Fe–Mn in the entire composition range.…”

Section: Calphad Approaches For Magnetic Transitionsmentioning

confidence: 99%

Lambda transitions in materials science: Recent advances in CALPHAD and first‐principles modelling

Körmann

Breidi

Dudarev

et al. 2013

Physica Status Solidi (b)

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211 6792 465 This paper provides a comprehensive overview of state-ofthe-art computational techniques to thermodynamically model magnetic and chemical order-disorder transitions. Recent advances as well as limitations of various approaches to these so-called lambda transitions are examined in detail, focussing on calphad models and first-principles methods based on density functional theory (DFT). On the one hand empirical implementations -based on the Inden-Hillert-Jarl formalismare investigated, including a detailed interpretation of the relevant parameters, physical limiting cases and potential extensions. In addition, Bragg-Williams-based approaches as well as cluster-variation methods of chemical order-disorder transitions are discussed. On the other hand, it is shown how magnetic contributions can be introduced based on various microscopic model Hamiltonians (Hubbard model, Heisenberg model and beyond) in combination with DFT-computed parameters. As a result of the investigation we were able to indicate similarities between the treatment of chemical and magnetic degrees of freedom as well as the treatment within the calphad and DFT approaches. Potential synergy effects resulting from this overlap have been derived and alternative approaches have been suggested, in order to improve future thermodynamic modelling of lambda transitions.

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Nuclear Resonant Scattering of Annihilation Photons

Давыдов

2014

Springer Tracts in Modern Physics

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Annihilation of Positrons in Metals

Cited by 6 publications

References 0 publications

Bound states in the tachyon exchange potential

Bound states in the tachyon exchange potential

Lambda transitions in materials science: Recent advances in CALPHAD and first‐principles modelling

Nuclear Resonant Scattering of Annihilation Photons

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